[SERIAL] sunsab: Convert to of_driver framework.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/serial/sunsab.c b/drivers/serial/sunsab.c
index 7da02d1..8d3c7e2 100644
--- a/drivers/serial/sunsab.c
+++ b/drivers/serial/sunsab.c
@@ -1,7 +1,7 @@
/* sunsab.c: ASYNC Driver for the SIEMENS SAB82532 DUSCC.
*
* Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be)
- * Copyright (C) 2002 David S. Miller (davem@redhat.com)
+ * Copyright (C) 2002, 2006 David S. Miller (davem@davemloft.net)
*
* Rewrote buffer handling to use CIRC(Circular Buffer) macros.
* Maxim Krasnyanskiy <maxk@qualcomm.com>
@@ -12,7 +12,7 @@
* Theodore Ts'o <tytso@mit.edu>, 2001-Oct-12
*
* Ported to new 2.5.x UART layer.
- * David S. Miller <davem@redhat.com>
+ * David S. Miller <davem@davemloft.net>
*/
#include <linux/config.h>
@@ -37,8 +37,8 @@
#include <asm/io.h>
#include <asm/irq.h>
-#include <asm/oplib.h>
-#include <asm/ebus.h>
+#include <asm/prom.h>
+#include <asm/of_device.h>
#if defined(CONFIG_SERIAL_SUNZILOG_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
#define SUPPORT_SYSRQ
@@ -976,199 +976,188 @@
#define sunsab_console_init() do { } while (0)
#endif
-static void __init for_each_sab_edev(void (*callback)(struct linux_ebus_device *, void *), void *arg)
+static int __init sunsab_init_one(struct uart_sunsab_port *up,
+ struct of_device *op,
+ unsigned long offset,
+ int line)
{
- struct linux_ebus *ebus;
- struct linux_ebus_device *edev = NULL;
+ up->port.line = line;
+ up->port.dev = &op->dev;
- for_each_ebus(ebus) {
- for_each_ebusdev(edev, ebus) {
- if (!strcmp(edev->prom_node->name, "se")) {
- callback(edev, arg);
- continue;
- } else if (!strcmp(edev->prom_node->name, "serial")) {
- char *compat;
- int clen;
+ up->port.mapbase = op->resource[0].start + offset;
+ up->port.membase = of_ioremap(&op->resource[0], offset,
+ sizeof(union sab82532_async_regs),
+ "sab");
+ if (!up->port.membase)
+ return -ENOMEM;
+ up->regs = (union sab82532_async_regs __iomem *) up->port.membase;
- /* On RIO this can be an SE, check it. We could
- * just check ebus->is_rio, but this is more portable.
- */
- compat = of_get_property(edev->prom_node,
- "compatible", &clen);
- if (compat && clen > 0) {
- if (strncmp(compat, "sab82532", 8) == 0) {
- callback(edev, arg);
- continue;
- }
- }
- }
+ up->port.irq = op->irqs[0];
+
+ up->port.fifosize = SAB82532_XMIT_FIFO_SIZE;
+ up->port.iotype = UPIO_MEM;
+
+ writeb(SAB82532_IPC_IC_ACT_LOW, &up->regs->w.ipc);
+
+ up->port.ops = &sunsab_pops;
+ up->port.type = PORT_SUNSAB;
+ up->port.uartclk = SAB_BASE_BAUD;
+
+ up->type = readb(&up->regs->r.vstr) & 0x0f;
+ writeb(~((1 << 1) | (1 << 2) | (1 << 4)), &up->regs->w.pcr);
+ writeb(0xff, &up->regs->w.pim);
+ if ((up->port.line & 0x1) == 0) {
+ up->pvr_dsr_bit = (1 << 0);
+ up->pvr_dtr_bit = (1 << 1);
+ } else {
+ up->pvr_dsr_bit = (1 << 3);
+ up->pvr_dtr_bit = (1 << 2);
+ }
+ up->cached_pvr = (1 << 1) | (1 << 2) | (1 << 4);
+ writeb(up->cached_pvr, &up->regs->w.pvr);
+ up->cached_mode = readb(&up->regs->rw.mode);
+ up->cached_mode |= SAB82532_MODE_FRTS;
+ writeb(up->cached_mode, &up->regs->rw.mode);
+ up->cached_mode |= SAB82532_MODE_RTS;
+ writeb(up->cached_mode, &up->regs->rw.mode);
+
+ up->tec_timeout = SAB82532_MAX_TEC_TIMEOUT;
+ up->cec_timeout = SAB82532_MAX_CEC_TIMEOUT;
+
+ if (!(up->port.line & 0x01)) {
+ int err;
+
+ err = request_irq(up->port.irq, sunsab_interrupt,
+ SA_SHIRQ, "sab", up);
+ if (err) {
+ of_iounmap(up->port.membase,
+ sizeof(union sab82532_async_regs));
+ return err;
}
}
-}
-static void __init sab_count_callback(struct linux_ebus_device *edev, void *arg)
-{
- int *count_p = arg;
-
- (*count_p)++;
-}
-
-static void __init sab_attach_callback(struct linux_ebus_device *edev, void *arg)
-{
- int *instance_p = arg;
- struct uart_sunsab_port *up;
- unsigned long regs, offset;
- int i;
-
- /* Note: ports are located in reverse order */
- regs = edev->resource[0].start;
- offset = sizeof(union sab82532_async_regs);
- for (i = 0; i < 2; i++) {
- up = &sunsab_ports[(*instance_p * 2) + 1 - i];
-
- memset(up, 0, sizeof(*up));
- up->regs = ioremap(regs + offset, sizeof(union sab82532_async_regs));
- up->port.irq = edev->irqs[0];
- up->port.fifosize = SAB82532_XMIT_FIFO_SIZE;
- up->port.mapbase = (unsigned long)up->regs;
- up->port.iotype = UPIO_MEM;
-
- writeb(SAB82532_IPC_IC_ACT_LOW, &up->regs->w.ipc);
-
- offset -= sizeof(union sab82532_async_regs);
- }
-
- (*instance_p)++;
-}
-
-static int __init probe_for_sabs(void)
-{
- int this_sab = 0;
-
- /* Find device instances. */
- for_each_sab_edev(&sab_count_callback, &this_sab);
- if (!this_sab)
- return -ENODEV;
-
- /* Allocate tables. */
- sunsab_ports = kmalloc(sizeof(struct uart_sunsab_port) * this_sab * 2,
- GFP_KERNEL);
- if (!sunsab_ports)
- return -ENOMEM;
-
- num_channels = this_sab * 2;
-
- this_sab = 0;
- for_each_sab_edev(&sab_attach_callback, &this_sab);
return 0;
}
-static void __init sunsab_init_hw(void)
+static int __devinit sab_probe(struct of_device *op, const struct of_device_id *match)
{
- int i;
+ static int inst;
+ struct uart_sunsab_port *up;
+ int err;
- for (i = 0; i < num_channels; i++) {
- struct uart_sunsab_port *up = &sunsab_ports[i];
+ up = &sunsab_ports[inst * 2];
- up->port.line = i;
- up->port.ops = &sunsab_pops;
- up->port.type = PORT_SUNSAB;
- up->port.uartclk = SAB_BASE_BAUD;
+ err = sunsab_init_one(&up[0], op,
+ sizeof(union sab82532_async_regs),
+ (inst * 2) + 0);
+ if (err)
+ return err;
- up->type = readb(&up->regs->r.vstr) & 0x0f;
- writeb(~((1 << 1) | (1 << 2) | (1 << 4)), &up->regs->w.pcr);
- writeb(0xff, &up->regs->w.pim);
- if (up->port.line == 0) {
- up->pvr_dsr_bit = (1 << 0);
- up->pvr_dtr_bit = (1 << 1);
- } else {
- up->pvr_dsr_bit = (1 << 3);
- up->pvr_dtr_bit = (1 << 2);
- }
- up->cached_pvr = (1 << 1) | (1 << 2) | (1 << 4);
- writeb(up->cached_pvr, &up->regs->w.pvr);
- up->cached_mode = readb(&up->regs->rw.mode);
- up->cached_mode |= SAB82532_MODE_FRTS;
- writeb(up->cached_mode, &up->regs->rw.mode);
- up->cached_mode |= SAB82532_MODE_RTS;
- writeb(up->cached_mode, &up->regs->rw.mode);
-
- up->tec_timeout = SAB82532_MAX_TEC_TIMEOUT;
- up->cec_timeout = SAB82532_MAX_CEC_TIMEOUT;
-
- if (!(up->port.line & 0x01)) {
- if (request_irq(up->port.irq, sunsab_interrupt,
- SA_SHIRQ, "serial(sab82532)", up)) {
- printk("sunsab%d: can't get IRQ %x\n",
- i, up->port.irq);
- continue;
- }
- }
+ err = sunsab_init_one(&up[0], op, 0,
+ (inst * 2) + 1);
+ if (err) {
+ of_iounmap(up[0].port.membase,
+ sizeof(union sab82532_async_regs));
+ free_irq(up[0].port.irq, &up[0]);
+ return err;
}
+
+ uart_add_one_port(&sunsab_reg, &up[0].port);
+ uart_add_one_port(&sunsab_reg, &up[1].port);
+
+ dev_set_drvdata(&op->dev, &up[0]);
+
+ inst++;
+
+ return 0;
}
+static void __devexit sab_remove_one(struct uart_sunsab_port *up)
+{
+ uart_remove_one_port(&sunsab_reg, &up->port);
+ if (!(up->port.line & 1))
+ free_irq(up->port.irq, up);
+ of_iounmap(up->port.membase,
+ sizeof(union sab82532_async_regs));
+}
+
+static int __devexit sab_remove(struct of_device *op)
+{
+ struct uart_sunsab_port *up = dev_get_drvdata(&op->dev);
+
+ sab_remove_one(&up[0]);
+ sab_remove_one(&up[1]);
+
+ dev_set_drvdata(&op->dev, NULL);
+
+ return 0;
+}
+
+static struct of_device_id sab_match[] = {
+ {
+ .name = "se",
+ },
+ {
+ .name = "serial",
+ .compatible = "sab82532",
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, sab_match);
+
+static struct of_platform_driver sab_driver = {
+ .name = "sab",
+ .match_table = sab_match,
+ .probe = sab_probe,
+ .remove = __devexit_p(sab_remove),
+};
+
static int __init sunsab_init(void)
{
- int ret = probe_for_sabs();
- int i;
+ struct device_node *dp;
+ int err;
- if (ret < 0)
- return ret;
+ num_channels = 0;
+ for_each_node_by_name(dp, "su")
+ num_channels += 2;
+ for_each_node_by_name(dp, "serial") {
+ if (of_device_is_compatible(dp, "sab82532"))
+ num_channels += 2;
+ }
- sunsab_init_hw();
+ if (num_channels) {
+ sunsab_ports = kzalloc(sizeof(struct uart_sunsab_port) *
+ num_channels, GFP_KERNEL);
+ if (!sunsab_ports)
+ return -ENOMEM;
- sunsab_reg.minor = sunserial_current_minor;
- sunsab_reg.nr = num_channels;
+ sunsab_reg.minor = sunserial_current_minor;
+ sunsab_reg.nr = num_channels;
- ret = uart_register_driver(&sunsab_reg);
- if (ret < 0) {
- int i;
+ err = uart_register_driver(&sunsab_reg);
+ if (err) {
+ kfree(sunsab_ports);
+ sunsab_ports = NULL;
- for (i = 0; i < num_channels; i++) {
- struct uart_sunsab_port *up = &sunsab_ports[i];
-
- if (!(up->port.line & 0x01))
- free_irq(up->port.irq, up);
- iounmap(up->regs);
+ return err;
}
- kfree(sunsab_ports);
- sunsab_ports = NULL;
- return ret;
+ sunsab_reg.tty_driver->name_base = sunsab_reg.minor - 64;
+ sunsab_reg.cons = SUNSAB_CONSOLE();
+ sunserial_current_minor += num_channels;
}
- sunsab_reg.tty_driver->name_base = sunsab_reg.minor - 64;
-
- sunsab_reg.cons = SUNSAB_CONSOLE();
-
- sunserial_current_minor += num_channels;
-
- for (i = 0; i < num_channels; i++) {
- struct uart_sunsab_port *up = &sunsab_ports[i];
-
- uart_add_one_port(&sunsab_reg, &up->port);
- }
-
- return 0;
+ return of_register_driver(&sab_driver, &of_bus_type);
}
static void __exit sunsab_exit(void)
{
- int i;
-
- for (i = 0; i < num_channels; i++) {
- struct uart_sunsab_port *up = &sunsab_ports[i];
-
- uart_remove_one_port(&sunsab_reg, &up->port);
-
- if (!(up->port.line & 0x01))
- free_irq(up->port.irq, up);
- iounmap(up->regs);
+ of_unregister_driver(&sab_driver);
+ if (num_channels) {
+ sunserial_current_minor -= num_channels;
+ uart_unregister_driver(&sunsab_reg);
}
- sunserial_current_minor -= num_channels;
- uart_unregister_driver(&sunsab_reg);
-
kfree(sunsab_ports);
sunsab_ports = NULL;
}